Creepy Parking Lot Zombie Humans

I like to do the "pull through" in the school parking lot so that my car is facing out and I can make a quick escape at the end of the day-- I get to school early enough to do this (because I never want to "back in" when there's traffic in the lot-- I hate when people stop fucking parking lot traffic because they are determined to back-in to their spot) but the one thing that spooks me about the pull through is when I wedge my car between two other parked cars and look over and one of the cars still contains a human-- they're usually just sitting there, deadfaced, fucking with their phone and it's weird-- I start wondering: did I park too close and trap them in their car? are they going to get out at the same time as me? should I wave to them? are they breathing?-- so I'd appreciate it if people, after they park, immediately get out of their car . . . or if not, at least open the window and hang your arm out, so that someone pulling in then recognizes that there's a human inside the car you are about to cozy up to.